Foxconn Technology Co., Ltd.

Fu Zhun Precision Industry (shen Zhen) Co., Ltd.

Chou-Chen Shih

Ching-Hsing Huang

Jen-Te Wang

Cheng-Fa Weng

Jen-Hung Chung

Chien-Long Hong

Xu Dong

A motor stator includes a claw-pole assembly (), a fixing structure () and a sleeve bearing (). The claw-pole assembly includes a pair of yokes () each having a plurality of pole teeth () intermeshed with those of the other yoke. A gap () is defined between two neighboring teeth. The fixing structure is made of plastic material integral with the yokes by insert molding, including a connecting portion () contained in the gaps, a base () formed at an end of the claw-pole assembly, and a tube () extending from the base into the claw-pole assembly. The sleeve bearing is fixedly embedded in the tube during the process of insert molding the fixing structure to the yokes.

Motor stator

An auto-focusing camera includes a pair of drive units () arranged back-to-back. Each one of the drive units includes a lens unit (), a permanent magnet () mounted around the lens unit, upper and lower coil seats () arranged at upper and lower sides of the permanent magnet, and upper and lower coils () wound around the upper and lower coil seats, respectively. The upper and lower coils are used for inducing the upper and lower yokes () to generate magnetic fields when electric currents are applied to the first and second coils. The magnetic fields generated by the upper and lower yokes interact with the magnetic field of the permanent magnet to drive the lens unit into movement between its focal points. The permanent magnet is fixed to and telescopes inwardly or outwardly with the lens unit.

Auto-focusing camera

A two-step auto focus camera with two focal points includes a lens unit () and a permanent magnet () being fixedly mounted around the lens unit to move with the lens unit. Upper and lower coil seats () are mounted around the lens unit and are arranged at upper and lower sides of the magnet, respectively. Upper and lower coils () wind around the upper and lower coil seats, respectively. A circuit board () supplies a current to each of the coils, wherein the current to each coil has a plurality of square waves in one focusing time for the lens unit to move from one focal point to the other focal point.

Two-step auto focus camera and method for driving the same

Growing community of inventors

Taipei Hsien, Taiwan

Chou-Chen Shih